Can the overhead floor of residential buildings be changed from property to office?

The overhead floor of a residential building cannot be changed from property to office. Residential property management occupies the empty floor on the first floor for office management, which is legal in construction, in order to provide necessary basic elements for better service to residential owners and environmental sanitation. The property occupies the empty floor on the first floor for operating income, and there is no fund to serve the owners of the community. The amount of money divided into personal pockets is illegal, and the problem is reflected to the urban management departments at or above the township level.